#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h> 
int main()
{
	int a, b;
	char operator;
	scanf("%d %c %d", &a, &operator,&b);
	switch (operator)
	{
	case '+':
		printf("%d", a + b); break;
	case '-':
		printf("%d", a - b); break;
	case '*':
		printf("%d", a * b); break;
	case '/':
		printf("%d", a / b); break;
	case '%':
		printf("%d", a % b); break;
	default:
		printf("ERROR");
	}
	return 0;
}
